Re: NFS Unbound Error Code 6 & Error Code 9: "Unable to save file"
I encountered Error Code 9 this time. The solution was to perform a complete restart of Unbound and proceed to the custom car wrap screen until the error messages stopped appearing. This resolved the issue for me.
I was in the lobby of Lakeshore Online, meaning not participating in the game, and had been customizing my car wrap for over 30 minutes. Fortunately, the car wrap I created was saved.
I repeated the process of returning to the main menu upon game startup, quitting, restarting Unbound, and proceeding to the custom car wrap screen. Each time, some error messages appeared. There was a message saying the save file was discarded but saved. After those error messages stopped appearing, I had to manually reapply the car wrap for all cars in Lakeshore Online as they were all removed.
As a preventive measure, it may be advisable not to stay in the lobby screen of Lakeshore Online for an extended period, as it seems to disconnect from the server after about 30 minutes. However, in reality, this time is necessary when working on creating a car wrap, so there might be no choice but to rely on luck. The downside is having to reapply the car wrap for all cars.
That concludes my report. While this may not solve all issues, I hope it proves helpful to someone.